Nigunim without words

I am told that this Nigun was a favorite of my wife's grandfather, Harav Yitzchok Aharon Flatto from Lodz, Poland in the 1930s as told to us by his daughter (my mother-in-law). It was probably adapted to the Shabbos Zemer Kol M'kadesh. My son walked down the aisle to this beautiful Nigun at his wedding.